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These pages provide information on the status, distribution, and ecology of vertebrates and invertebrates that occur in Montana. The focus is on Species of Concern in Montana, but for vertebrates, basic information is provided on all species.

The links below provide background information on MTNHP, its data, and the Heritage Network:
- Species of Concern and Ranking
- Federal Agency Designations
- BIOTICS Database
- Other MTNHP Databases
- Natural Heritage Network
The report of Animal Species of Concern is used to direct data acquisition by MTNHP, and summarizes information on species in Montana that are known or suspected to be rare, endemic, disjunct, threatened or endangered. For more informaiton, read the ranking criteria described used in developing the state ranks for vertebrate animal species in Montana.